Use PHP 7.2 on travis (#889)

Author: Nyholm

.travis.yml

@@ -0,0 +1,16 @@
+language: php
+sudo: false
+
+php: 7.2
+
+
+install:
+  - composer update --prefer-stable --prefer-dist
+
+script:
+    - composer test-ci
+
+after_success:
+    - wget https://scrutinizer-ci.com/ocular.phar
+    - php ocular.phar code-coverage:upload --format=php-clover build/coverage.xml
+